search for: subtract

Dear R users, I have two datasets: id1 <- c(rep(1,10), rep(2,10), rep(3,10)) value1 <- sample(1:100, 30, replace=TRUE) dataset1 <- cbind(id1,value1) id2 <- c(1,2,3) subtract.value <- c(1,3,5) dataset2 <- cbind(id2, subtract.value) I want to subtract the number of rows in the subtract.value that corresponds to the id value in dataset1. So for the 1 in id1, I want to remove the first row, for 2 in id1 I want to remove the first 3 rows, for 3 in id1 I want t...

Sorry to keep posting but I want to do this right and I'm hoping for some pointers I now have two time series objects which I need to subtract. Unfortunatly the two series dont have the same sample rates. When I try to subtract them avgSub<-avg1-avg2 The time series object is clever enough to object. So I guess I need to write a function for subtraction of the time series objects which will need to interpolate the samples to the same...

....3. CPUID.7.0.EBX[1]=1 indicates TSC_ADJUST MSR 0x3b is supported. Basically it is used to simplify TSC synchronization, operation of IA32_TSC_ADJUST MSR is as follows: 1). On RESET, the value of the IA32_TSC_ADJUST MSR is 0; 2). If an execution of WRMSR to the IA32_TIME_STAMP_COUNTER MSR adds (or subtracts) value X from the TSC, the logical processor also adds (or subtracts) value X from the IA32_TSC_ADJUST MSR; 3). If an execution of WRMSR to the IA32_TSC_ADJUST MSR adds (or subtracts) value X from that MSR, the logical processor also adds (or subtracts) value X from the TSC; With...

Hello Chandler, > First and foremost - how do you address correctness issues here? Because the subtraction `A - B` can escape/capture more things. Specifically, if one of `A` or `B` is escaped/captured, the > subtraction can be used to escape or capture the other pointer. So *some* of the conservative treatment is necessary. What is the plan to update all the analyses to remain correct? What >...

Dear R helpers I have a dataframe as df = data.frame(x = c(1, 14, 3, 21, 11), y = c(102, 500, 40, 101, 189)) > df    x   y 1  1 102 2 14 500 3  3  40 4 21 101 5 11 189 # Actually I am having dataframe having multiple columns. I am just giving an example. I need to subtract all the rows of df by the first row of df i.e. I need to subtract each element of 'x' column by 1. Likewise I need to subtract all elements of column 'y' by 11. Thus I need an output like > df_new    x   y 1  0   0 2 13 398 3  2 -62 4 20  -1 5 10  87 As I had mentioned above, I...

...rel_offset); > } > } > ``` > > For example, a common loop optimization technique is something like the following in *pseudocode* (note that this is > not necessarily valid C but we might reasonably want to express this kind of optimization within LLVM: When LLVM need to insert subtraction between two pointers, like the example you wrote, I believe we can use 'sub(ptrtoint p, ptrtoint q)' as before. This addresses concerns regarding correctness of existing pointer analysis. So you don't lose expressiveness, while you gain precision when possible. A concrete suggestion...

there are really two related problems here I have a 2D matrix A <- matrix(1:100,nrow=20,ncol =5) S <- matrix(1:10,nrow=2,ncol =5) #I want to subtract S from A. so that S would be subtracted from the first 2 rows of #A, then the next two rows and so on. #I have a the same problem with a 3D array # where I want to subtract Q for every layer (1-10) in Z # I thought I solved this one with array(mapply("-",Z,Q),dim=dim(Z)) # but got...

...ere are only 1048 inttoptrs, meaning that 95.4% of them are generated by LLVM passes. This trend is similar in ptrtoint instruction as well. When compiling SPEC 2017 with -O0, there are 23,208 ptrtoint instructions, but among them 22,016 (94.8%) are generated by Clang frontend to represent pointer subtraction. They aren't effectively optimized out because there are even more ptrtoints (31,721) after -O3. This is bad for performance because existence of ptrtoint makes analysis return conservative result as a pointer can be escaped through the cast. Memory accesses to a pointer came from inttoptr i...

I don't know if there is a way to do this in R but I want to subtract within the same column from different rows. I want to subtract c(r)-c(r-1) and continue down the column until they are all calculated and form another column. Again I don't know if R can do this but I thought I would ask. Thanks either way

On Mon, Jan 14, 2019 at 9:36 AM Chandler Carruth via llvm-dev < llvm-dev at lists.llvm.org> wrote: > While I'm very interested in the end result here, I have some questions > that don't seem well answered yet around pointer subtraction... > > First and foremost - how do you address correctness issues here? Because > the subtraction `A - B` can escape/capture more things. Specifically, if > one of `A` or `B` is escaped/captured, the subtraction can be used to > escape or capture the other pointer. > Isn't...

Hello everybody, how can I reduce e.g. 30 days from a date? When I do the following "2011-05-01 CEST" -"2011-04-01 CEST" I get: "Time difference of 30 days" an thats fine. But when I try "2011-05-01 CEST" - 30 I get nonsense. So how can I subtract some days, month or years from a date? thanking you in anticipation Claudia Paladini

Hi everyone, I am having trouble with creating a loop to subtract arrays. In R, this is what I have done: > Vobsr <- read.csv("Observed_Flow.csv", header = TRUE, sep =",") # see data > below > Vsimr <- read.csv("1000Samples_Vsim.csv", header = TRUE, sep =",") # see > data below > Vobsr <- as.matrix...

Afternoon- I am trying to subtract a matrix, basically a vector of 28 values, each by the same number to account for differences in regression fitting. I am taking the 1x28 and minus it by the mean value of the matrix, each number. The result I receive is a 1X29 matrix. Does anyone know why the result has an extra value? > lffeb...

...define a negative SELCET statement in a SQL call so now I'm looking for the smoothest way to generate a list of what I would like from my large database by first pulling all the names with a query like this "SELECT top 1 * FROM your_table" (thank you Bart Joosen for the idea) and then subtract the variables I am not allow to pull manually ending up with a 'positive' definition of what I want, something I can use in a SQL SELCT statement (see my email on this list from yesterday for more on that). When I query the database for the variable names I get something similar to 'D...

...gt; >> >> On Mon, Jan 14, 2019 at 9:36 AM Chandler Carruth via llvm-dev < >> llvm-dev at lists.llvm.org> wrote: >> >>> While I'm very interested in the end result here, I have some questions >>> that don't seem well answered yet around pointer subtraction... >>> >>> First and foremost - how do you address correctness issues here? Because >>> the subtraction `A - B` can escape/capture more things. Specifically, if >>> one of `A` or `B` is escaped/captured, the subtraction can be used to >>> escape or ca...

Hi, For example, given two 2x2 matrices m1 and m2. I would like to add/subtract element by element > m1 [,1] [,2] [1,] NA NA [2,] 1 2 > m2 [,1] [,2] [1,] 1 NA [2,] NA 2 > m1 + m2 [,1] [,2] [1,] NA NA [2,] NA 4 How can I ignore the NA, and get this ? Hope the solution can be extended to subtract and modulo also....

...dataframe wf existing of a header with different labels and beneath the values of those labels : wf: label1 label2 ... 0,45 0,21 0,10 0,45 .... .... I have a list fl <- c("label2","label3",..) Isn't possible to use the list elements in the list in order to subtract values from the dataframe? like : wf$fl[[1]] When I do in R I get :NULL fl[[1]] gives "label2" so no problem here... While wf$label1 works fine. -- View this message in context: http://www.nabble.com/use-list-elements-to-subtract-values-from-the-dataframe-tp17098923p17098923.html...

Hi, I am new to R an dI need some help I have a matrix of real values 100*300 and I would like to calculate the mean for each column , then for each entry in a column i need to subtract the mean so I will have a matrix where the columns have zero mean. any one know how to do that . Thanks -- View this message in context: http://www.nabble.com/subtract-the-mean-from-each-column-tp16610489p16610489.html Sent from the R help mailing list archive at Nabble.com.

hi R users I have a data set with the name AA AA<-1:100 Now I want to get a child array from AA every 10 numbers e.g. ab =c(10,20,30,40,50,60,70,80,100) How could I subtract aa from AA? thank you . -- TANG Jie Email: totangjie@gmail.com Tel: 0086-2154896104 Shanghai Typhoon Institute,China [[alternative HTML version deleted]]

I am trying to figure out how to create a loop that will take the difference of each member of a vector from each other and also spit out which one has the least difference. I do not want the vector member to subtract from itself or it must be able to disregard the 0 obtained from subtracting from itself. For example: x = c(17,19,23,29) 1. abs(x-x[1]) = (0, 2, 6, 12) 2. abs(x-x[2]) = (2, 0, 4, 10) 3. abs(x-x[3]) = (6, 4, 0, 6) 4. abs(x-x[4]) = (12, 10, 6, 0) The code would then spit out that x[1] and x[2]...